Timer circuit for a stroboscope
Track lighting system for 277 volt power line
Traffic light dimming technique and circuitry
Traffic signal installation comprising an led-light source
Transformer dimmer circuit
Transformerless current-limiting circuit
Transformerless high-voltage generator circuit
Two contact, AC-operated negative glow fluorescent lamp
Two terminal controller
Two terminal incandescent lamp controller
Two terminal pulsed low voltage incandescent lamp dimmer with in